R5 swim platform repair
R5 swim platform repair
Hello, looking for advice on a repair I’m looking to make. On my R5 swim platform, one of the lag screws holding the port side stainless steel bumper surround to the fiberglass swim platform pulled out. Looks like when this happened it created a bit of a gap between the mounting plate attached to the SS bumper and the platform itself. I’ve attached a couple of pictures to illustrate. Any suggestions on best approach to repair this? Should I remove the other remaining lag screw and temporarily remove the bumper, then fill the two screw holes, and then reattach the bumper with new lag screws? If so what do I fill the holes with? And when the fill dries do I then drill new pilot holes for the replacement screws? And if so do I apply any calk or sealant into the newly drilled pilot screw holes before inserting the replacement lag screws? Doesn’t look difficult but I want to do it the right way. Thank you for any suggestions.
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2015 Cobalt R5
- jhnmdahl
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Re: R5 swim platform repair
Is there an insert the screws are crewing into, or is it just fiberglass? If it's just fiberglass, I'd think an epoxy-based filler like Devcon would be a good choice, maybe something like
https://a.co/d/8vuwFo3
https://a.co/d/8vuwFo3
Administrator of the www.cobaltchat.com Cobalt boats community forum
2015 210 (Volvo Penta 5.7L V8-225)
2015 210 (Volvo Penta 5.7L V8-225)
Re: R5 swim platform repair
When I do fiberglass repairs, I always use the West system products. They have a lot of fillers and additives too that will make your job much easier. Check out their website.
https://www.westsystem.com/
https://www.westsystem.com/
2017 R5 350HP Mercruiser Bravo III
Northridge, CA
Big Bear Lake, CA
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Northridge, CA
Big Bear Lake, CA
South Lake Tahoe, CA
Re: R5 swim platform repair
Thanks for the suggestions on the epoxy’s. The two lag screws go directly into the underside of the swim platform, there are no inserts. I was also considering using Sikaflex 292i or 3M5200. Any thoughts on this? And after applying either of these or an epoxy should I then finish off with a gel coat topping and then drill pilot holes and then reattach screws.
2015 Cobalt R5
Re: R5 swim platform repair
I would fill the hole with epoxy - put a piece of tape on it to keep the epoxy from running out until it cures. Drill a new hole and insert the screw. Should no need gelcoat, the screw and bracket will cover things up. I would NOT use 5200, it is a permanent bond not really made for filling something like this hole where you want to tape a screw into it - it does not cure hard like epoxy.
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2014 Cobalt R5 - Current
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1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
Re: R5 swim platform repair
Ok understand epoxy is the way to go. Would Marine-Tex work?
2015 Cobalt R5
Re: R5 swim platform repair
I personally have never used it for this, the few times I have had to do this, it was easier to buy the tubes of epoxy in a syringe that mix as you push it out. But, Marine-Tex might work better in this case since you are trying to file UP into a hole.
______________________________
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
Re: R5 swim platform repair
Makes sense, so you’ve used something like loctite marine epoxy? I’ll check this out and compare to Marine-Tex and see which might work in this situation considering I have to apply it upside down underneath the swim platform where the stainless bumper mounts.
2015 Cobalt R5
Re: R5 swim platform repair
Yes, I've used the Loctite Marine epoxy - to fill and re-tap screw holes like your doing.
______________________________
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
Re: R5 swim platform repair
I used Marine-Tex and it worked perfectly. Since it was an overhead hole, I let it set up for a few minutes to stiffen up and then used a syringe and putty nice to apply. Covered with clear packing tape. After it cured removed the tape and drilled new hole. All good now. Thank you all for your suggestions and advice.
2015 Cobalt R5
Re: R5 swim platform repair
Good deal!
______________________________
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
2014 Cobalt R5 - Current
1999 SeaRay 185 Bowrider -Previous
2000 SeaRay 290 SunDancer - Previous
1979 Correct Craft Ski-Tique - Previous
1948 Chris Craft Custom Runabout - Oh man to have that one back!
- jhnmdahl
- Vice Admiral
- Posts: 1928
- Joined: Tue Jan 06, 2015 5:11 pm
- Location: Twin Cities, MN
- Contact:
Re: R5 swim platform repair
Marine-Tex and Devcon are similar products, both made by https://itwperformancepolymers.com/
I've never used Marine-Tex, but have heard it's similar to Devcon and has very good dimensional stability over time. A great solution to your problem - thanks for reporting back!
I've never used Marine-Tex, but have heard it's similar to Devcon and has very good dimensional stability over time. A great solution to your problem - thanks for reporting back!
Administrator of the www.cobaltchat.com Cobalt boats community forum
2015 210 (Volvo Penta 5.7L V8-225)
2015 210 (Volvo Penta 5.7L V8-225)
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